-
Created by Unknown User (peteragi), last modified on 20.03.2024
You are viewing an old version of this page. View the current version.
Compare with Current
View Page History
« Previous
Version 3
Next »
Testing on Turkey Slices
To define the effectiveness of the CNC and discover possible faults, we test ARTS 2.0 on turkey slices.
Since Lightburn is not made for milling with spindle, the G-code has to be post-processed through a python code as per now.
def post_process_gcode(input_file, output_file):
add_custom_command = True
add_M5_before_M9 = True
# Open the input file in read mode
with open(input_file, 'r') as f:
lines = f.readlines()
# Open the output file in write mode
with open(output_file, 'w') as f:
for line in lines:
# Check if the line is a rapid move command (G0) with Z10
if add_M5_before_M9 == False:
f.write(line)
elif line.startswith('G0') and 'Z10' in line:
# Change rapid move command to linear move (G1) with Z10
modified_line = line.replace('G0', 'G1')
if(add_custom_command==True):
for newline in lines:
if newline.startswith('G1'):
spindle_speed = "S" + newline.split('S', 1)[-1].strip() # Extracting all characters after "S" including "S"
print(spindle_speed)
break
#modified_line+=spindle_speed
modified_line = "M3" + "\n" + modified_line.strip() + spindle_speed + "\n"
print(modified_line)
f.write(modified_line)
add_custom_command = False
elif line.startswith('G1') and 'S' in line:
no_spindle_g1 = newline.split('S', 1)[0].strip() + "\n" # Extracting all characters after "S" including "S"
f.write(no_spindle_g1)
# Check if the line is a spindle stop command (M5) or spindle start command (M3)
elif line.startswith('M5') or line.startswith('M3'):
# Ignore these commands until M9
pass
# Check if the line is the spindle stop command (M9)
elif line.startswith('M9'):
# Add M5 before M9
if add_M5_before_M9:
f.write('M5\n')
add_M5_before_M9 = False
# Write the line as it is
f.write(line)
else:
# Write the line as it is
f.write(line)
# Example usage
if __name__ == "__main__":
input_file = 'Cutting_samples_2S_100p.gc'
output_file = 'PP_Cutting_samples_2S_100p.gc'
post_process_gcode(input_file, output_file)
print("G-code post-processing complete!")
Summary
Slice |
Settings |
Status |
Comments |
Future change |
1 |
Speed: 10mm/s Power: 100% |
Failure |
Too fast. |
Slow down |
2 |
Speed: 2mm/s Power: 100% |
Failure |
Did not cut all the way through. |
Lower the spindle. |
3 |
Speed: 1mm/s Power: 100% |
Success |
Mill bit diameter too high |
Change mill bit / Raise spindle |
4 |
Speed: 1mm/s Power: 100% |
Failure |
Freezer too warm, slice thawed and loosened |
|
Slice 4: Failure
Cutting went well. We tried letting the CNC take multiple passes to improve the cut quality. I suspect the first layer is cut too deep.
Also added priority for the cross in the grid samples. Might be better to treat them as separate samples and sample them one by one instead of cross plus square.
Image
Slice 3: Success
This time the mill cut well through the samples, but the mill bit diameter was quite large, and so quite a bit of material was lost.
The mill also left a bunch of spooning, which argues for a suction.
The samples did not slice quite as preferred after having being cut loose from the slice, one small sample even jumped away.
Image
Slice 2: Failure
Samples had a difficulty coming loose.
Mill pushed the slice around slightly.
Image
Slice 1: Failure
CNC cut too fast. Mill pushed the slice around slightly.
Image